PRIDE, W. M. (1989). Marketing Concepts And Strategies William M. Pride, O.c Ferell. Houghton Mifflin Company.
Lua i Stíl Chicago (17ú heag.)PRIDE, William M. Marketing Concepts And Strategies William M. Pride, O.c Ferell. Houghton Mifflin Company, 1989.
Lua MLA (8ú heag.)PRIDE, William M. Marketing Concepts And Strategies William M. Pride, O.c Ferell. Houghton Mifflin Company, 1989.
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